Second launch of SS-520-4 rocket in 2017 after first attempt in January 2017. SS-520-4 is fin stabilized rocket, version of SS-520 with third stage. It is utilizing spinning as method of stabilization; with length of 9.65 m (SS-520) and diameter of 520 mm it weighs over 2600 kg. Payload capacity is 140 kg. Rocket was launched for the first time in 1998 from Uchinoura and for the second time in 2000 from Norwegian Svalbard Satellite Station.
Payload will be spin stabilized Cubesat equipped with five cameras and data transmitter designed for Earth observation at University of Tokyo.